HOLLAND, MI — The U.S. Coast Guard on Saturday rescued seven late-night swimmers being tossed about by rip currents in a no-swim zone at Holland State Park, the agency said in a release.

Around 10:15 p.m., auxiliarists from the Coast Guard's Holland station arrived at the park and rescued five swimmers from the life-threatening currents off the park's north pier using life rings and heaving lines, according to the release.

Over the next three hours, crews with the Coast Guard and Michigan Department of Natural Resources also fished two more swimmers from the water, the release said.

Earlier in the day, the DNR had closed the area because of the dangerous conditions, and the pier was closed to swimmers. The DNR had responded to 12 cases of distressed swimmers before closing the park.

The rescued swimmers were not identified, and whether any suffered injury or other harm was not disclosed.

DNR officials patrolled the area to caution would-be swimmers against the adverse aquatic conditions between rescues.

In the release, Lt. Maria Wiener, public affairs officer at Coast Guard Sector Lake Michigan, urged swimmers to be fully aware of the dangers strong winds and high waves create.

"If you have any doubt regarding your ability to swim, wear a life jacket, or do not go out," Wiener said in the release.